Improvement in sad-iron heaters



S. M. JOHNSON,

Sad Iron Heater.

Patented Au 25, 1868.

va-0e n2? 6 N4 PETERi P homumn n her. Wahinglom D. c,

@uitrh tetra igment @f-firr.

\ Letters Patent N 81,377, dated August 25, 1868.

IMPROVEMENT IN SAIi -IRON HEATERS.

tits fidptule name it in that Qtttttrt haunt ant mating tart at it: smut.

To ALL WHOM 1p. MAY concnam I Be it known that I, S. M. JoHNsoN, oi Lockport, in the county of Niagara, and State of NewYorkphave invented certain new and-useful Improvements in Reversible Sad-Irons; and I do hereby declare that the 'following is a full and exact description thereof, reference beinghad to the accompanying drawings, in which- Figure I is a longitudinal vertical section. I Y

FigureII is aside elevation, with the handle detached. Figure III is a plan of one of the innercorrugated surfaces of the iron.- Figure IV is a plan of the burner. e I Like letters of reference refer to like parts in all the figures. I The invention is designed as improvements on the invention patented by me, December'lo, 1867, to which M Letters Patent,numbered 72,047, reference is made for a particular description thereof.

The invention consists- V I First, of an improved construction and arrangement of the burner and vapor-generating chamber. Second; in the arrangement of the valve, for regulating the fiow of the hydrocarbon-liquid near the burner, and operating it from the outside, by meansof and extending through the axis of the iron.

Third, constructing the inner surface of the smoothing-faces of the iron with radial corrugations to facilitate a inure uniform heating of the smoothing-surfaces.

' In the drawings, AA represent the reversible iron, with two smoothing-faces, and formed in two portions, which are united at the sides by means of a screw, as shown in Fig. II. B is the handle and reservoir for containing the gasoline or other hydrocarbon-liquid to be employed in heating the iron. 0 is a'pipe,

pipe O, the axis on which theiron turns while being reversed.

descending from one end of the reservoir, and bent-so as to pass horizontally into the iron at one of its ends. It may be formed in asingle piece or-not, as preferred. This pipe connects near the centre with one end oi' the casting D,i'orming the vapor-generating chamber e andburner F. To the other end of this casting is attached a hollow' rod or pipe G, which extends thr ough the opposite end of the sad-iron, and forms, with the The end of the axis. is connected with the handle by a red, I, provided with a. pin, J, and a spring, k,.for securing and retaining the handle in place after the iron has been reversed. The inner end of the pipe C is providedwith a contracted conical orifice, c, in which iits the conical end, I, of a rod, m, which extends through red G, and forms the valve or stop-cock for regulating the supply "of the liquid to the vapor-chamber e. This rod is provided with a thread which-screws through the end, d,-of the-castingD, and has at its outer end a thumb-piece, It, by which the same is turned.

If properly ccnstructedpno stufling-box will be reqniredto prevent the flow of the liquid along the thread of the valve-rod,'altheugh one may be employed if. desired. I

Thebnrnerconsists of a short vertical tubc, iv, extending from the centre of the casting D, and arranged so as to be in the centre of the iron, with a cross-wire, 0, near the upper end, and providedwith vertical slots 8, or other opeuin gspat opposite sides, for the free admission of air to th'vapor as it escapes from a small orifice, r,'at the bottom of the burner.

The vnporous liquid is first ignited at the orifice 1*, which soon heats the tube of the burner and the chamber e by radiation. The lieat in this chamber causesthc vaporization of the liquid as it enters the same, from whence the vapor escapes, and after a proper adm iirture of air, the combustion thereof takes place at the top of the burner. The cross-wire serves as a conductor of the heat to the tube of the burner, and thence to the vaporizing-chamber. I

The opposite inner surfaces of the smoothing-facesof the iron are formed with radial corrugations u u, connecting at the centre, and increasing in depth and width as they diverge, as most clearly shown in Fig. III. Where the smoothing-faces of the iron aremade of a uniform thickness, the contact ofthe flame at the centre produces an incrcased'temperature at that point. I i I .The object of. the corrugations u is to overcome this objection. By means of them the outer portions of the face can be made much thinner than at the centre, and still be sufiiciently still" and unyielding on account of the ribs formed by those corrugations.

The diminution in thethickness of the metal, in connection with the conducting-channels, for the heat which the corrugations form, causes the outer portion to become sooner heated, and as consequence thereof, a more uniform and equalized temperature produced throughout the whole face than would otherwise be i attained.

The slots s, in the tube of the burner, being formed in the sidesat right angles to the direction of motion in using the iron, the flame is not extinguished by the motion of the iron, as it might be if they were formed at the front and rear of the tube. The cross-wire 0 also renders the flame less liable to extinguishment.

7 It likewise divides the flame, and imparts a slight divergence to the branches, so as to cause them to impinge the surface of the iron at an inciination, and thereby prevent that reflux of the flame which results when the flame strikes at right angles, and, as a consequence thereof, a more perfect combustion is the result, and an avoidance 0f the smoking that would otherwise ensue.

What I claim as my invention, anddesire to secure by Letters Patent, is I 1. The valve zm, arranged with the burner F and hollow rod G, substantially in the-manner and for the purpose set forth.

2. The burner F, consisting of the tube 2:, provided with slots 8 s, and radiating-wire o, in combination with the vaporizing-chamber e, arranged as and for the purpose specified.

3. The radial corrugations u u, arranged with the burner F, substantially as shown and described.

S. M. JOHNSON.

Witnesses:

JAY Hum, J. C. COOK. 

